Lubricating apparatus



Aug. -7,` 1928. 1,679,537

H. J. MURPHY LUBR I CATI NG APPARATUS Filed March 14, 1922 E1/venian- I Patented Aug.4 7, 1928..

UNITED STATES PATENT oFFlcE.

HOWARD J. MURPHY, or READING, MASSACHUSETTS, AssIeNoB, BY'M'EsNE ASSIGN- MENTS, .To THE'EAssICx MANUFACTURING COMPANY, or CHICAGO, ILLINOIS, A

" .CoaPoaAT'IoN or DELAWARE.

LUBEICATING APPARATUS.

Application led March14, 1922. Serial No, 543,653.

Figure 1 is a side elevationof a lubricant v gun' WB Fi 2 is ar longitudinal, central section I through the nozzle of the gun, showing the j parts thereof in therelation -which they occupy when not connected to the lubricantreceiving element nipple; l, y

Fig. 3v is a'view si "lar to Fig. 2, showing ythe parts in the-same relation as n Fig. 2, but showing the nipple entered withln the nozzle; v Fi 4 is a sectional vview similar to Fig. 3, showing the relation of the parts pursuant to coupling and valve openlng operations; U

Fig. ais` a sectionA on the line 5--5 of Fig. 2, being partly in elevation; g. p

Fig. 6 shows-three views of a preferred 4form of coupling part, including top and bottom elevations and a central longitudinal section; p

Fi 7' shows an end'elevation and central, longitudinal section, respectively,l of the 30 preferred form of nozzle; and

Fig. Sshows an end elevation and central longitudinal section, respectively, of a lpreferred form' ofV lubricant-receiving nipp e.

vReferrin 'to the drawings and 'to the referred orm of my invention 'selected for illustrative purposes, I have shown a lubricant-'expelling device including aglubricant gun having a barrel 9, rear head 10, stem 11 threaded therein and handle12, all ofwliich may be of any ordinary or usual vconstruction. At the dischai` e end of the lubricant gun,`I have shown a ront head 13 carr ng a" nozzle which, in the preferredA form o 'my' invention, takes the formof a nozzle 'sleeve .445 14 intcriorly threaded at 15 to engage-a plug w 1-6,A which may conveniently be connected to the frontvphead by threads at 17. Ad'acent the open end of the nozzle sleeve 14, have shown an annular vspring 18l entered in a n pove and adapted to prevent loss pf a cou- Y. phng part 19 (Fig. 6) entered, within lthe 3, after which turnin nozzle sleeve 14 and' engaging the interior thereof by inclined means typified. by the threads-20, 21.

vThe coupling part 19 is provided, preferably as illustrated, at its inner surface with projections 22 a ainst which the lateral faces of suitable projections 23 on the lubricantreceiving nipple 24 mayabut when the-lubricant-receiving end of said nipple 24 is'entered in 4the nozzle of the lubricating device through the central aperture inthe coupling part n1,9. The coupling part 19 also provides ladjacent the projections 22, inner faces. adapted to underlie the rejections 23 on the lubricant-receiving nipp e when the coupling p'art is turned With'the nozzle part 14 relative' to said nipple. i

The coupling operation, per se, thus includes the entrance .of the 'nipple 24 into the nozzle'to the position illustrated in Fig. of the nozzle part 14 with the lubricant arrel etc. in a clockwisedirection will initially turn the coupling part 19 until portions thereof underlie the projections 23 on the nipple 24 and until the projections or bosses .19 abut against the lateral faces of the projections on the nipple. Further turning of the' nozzle 14 in a clockwise direction will cause relative movement 80 between the nozzle 14 and the coupling, part 19 because of the co-acting operation of the vthreads 20, 21 on the coupling part and nozzle respectively. This relative movement will result 1n pressin the coupling part 19 against the under side of the ro- ]ections 230m the 4nipple 24 untilthe deslredseal is effected'. In the preferred form of Iny invention illustrated, a sealing disc 30 is -mounted to reciprocate relative to the nozzle 14 and cooperating parts, being carried by the. slidab e seallng art 31 within the "nozzle. A valve contro 'ng discharge of lubricanty to the lubricant-receiving part 24 may conveniently be connected to andA operated by movement of the sealingv part 431, the valve 32 herein illustrated being of ythe longitudinal movable type, best viewed.

in sFigs. 3 and 4. To limit valve-opening movement and to provide a positive seal independent of the pressure of the lubricant pursuant to the completion of the coupling and valve-opening operations, l may provide opposed shoulders 40, Ll1 on the sealing part 3l and cooperatingnozz'le or valve-carrying plug i6, so that, when lcoupling is effected as shown in Fig. el, these lshoulders 'will abut and 'provide a' the sealing washer 30.

The .operation of the gun 'is thus toslip the nozzle over the lubricant-receiving npple until the shoulders or projections 23 on the nipple have passed through the coupling part 19 and then to turn the nozzle and asso-` ciated parts in clockwise direction until the v sealing disc is pressed against the lubricant-receiving end of the nipple, alter which continued turning movement ol the nozzle `to the right will move the nozzle llland nozzle pluglf forward, lleaving the sealing disc 30, sealing part 3l and associated valve 32 stationary so that, as the nozzle or valve-carrying plug 16 moves forward, the valve 32 will be open to permit dow or' lubricant there-` p through to the lubricant-receiving end of the ni ple 24.;

uring uncoupling by reverse rotation 0i.`

the barrel, a tight seal will be provided until the valve is closed. During valve opening and closing, the seal is urged toward the by the engagement of cooperating shoulders nipple by pressure of the lubricant, but, in the preferred form of my invention, a positive backing up of the sealing part is provided vvhen the valve. is entirely opened, this rearwardly of the sealing part. l

While I have shownand described a preerred form of one embodiment of my in? positive support lori Apart adapted to receive the end of a lubricant receiving member, sealing means carried bysaid nozzle, an annulus contained in said receiving part of the nozzle and having an aperture therein through which the end of said lubricant receiving member may pass, means projecting from the inner face oit said annulus for engaging vvithv projections on said lubricant receiving member, said annulus connected to said nozzle by inclined means "whereby, when said nozzle is turned to engage the lprojections on said lubricant receiving-member With the any nulus, the annulus being held from rotation relative to' the lubricant receiving member rides up such inclined means of the nozzle to advance the nozzle relative to the receiving member and said annu-lus, and thereby topress the end of the receiving member against said sealing part, andra valve openable by movement of said sealing part relative to said nozzle.

In testimony whereof, have signed my name to this specification.

HOWARD JV. MURPHY. 

